EP3023444A1

EP3023444A1 - Composition for fabricating organic film, organic light-emitting display apparatus manufactured using the same, and method of manufacturing the organic light-emitting display apparatus

Info

Publication number: EP3023444A1
Application number: EP15182794.6A
Authority: EP
Inventors: Jinho Kwack; Seungyong Song; Taewook Kang; Youngseo Choi; Changmok Kim; Daebeom Shin; Yonghyuck Lee
Original assignee: Samsung Display Co Ltd
Current assignee: Samsung Display Co Ltd
Priority date: 2014-11-19
Filing date: 2015-08-27
Publication date: 2016-05-25
Anticipated expiration: 2035-08-27
Also published as: TWI680963B; US9879035B2; TW201619121A; CN105601810A; KR102339283B1; KR20160060211A; EP3023444B1; US20160137769A1; CN105601810B

Abstract

A composition for fabricating an organic film, an organic light-emitting display apparatus manufactured using the same, and a method of manufacturing the organic light-emitting display apparatus, the composition comprising a first compound that includes n substituents Y, and m polymerizable groups P₁, wherein n is selected from 1, 2, 3, and 4; m is selected from 1, 2, 3, and 4; OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; OP₁ being (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; RP₁ being {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).

Description

The present invention relates to compositions for fabricating an organic film, organic light-emitting display apparatuses manufactured using the same, and methods of manufacturing the organic light-emitting display apparatuses.
Organic light-emitting devices, which are self-emitting devices, have advantages such as wide viewing angles, excellent contrast, quick response, high brightness, and excellent driving voltage characteristics, and can provide multicolored images.
An organic light-emitting device may have a structure including a substrate, and a first electrode, a hole transport region, an emission layer, an electron transport region, and a second electrode, which are sequentially disposed on the substrate. Holes injected from the first electrode move to the emission layer via the hole transport region, and electrons injected from the second electrode move to the emission layer via the electron transport region. Carriers such as the holes and electrons recombine in the emission layer to generate excitons. When the excitons drop from an excited state to a ground state, light is emitted.
Accordingly, a first aspect of the present invention is directed to compositions for fabricating an organic film, organic light-emitting display apparatuses manufactured using the same, and methods of manufacturing the organic light-emitting display apparatuses.
The invention may be realized by providing a composition for fabricating an organic film, the composition including a first compound that includes n substituents Y, and m polymerizable groups P₁, wherein n is selected from 1, 2, 3, and 4; m is selected from 1, 2, 3, and 4; OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; OP₁ being (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; RP₁ being {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound). Y may be selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group. m may be selected from 1, 2, and 3.
P₁ may be selected from an acrylate group, an epoxy group, and a vinyl group.
P₁ may be a group represented by one of the following Formulae 6-1 to 6-3:
wherein, in Formulae 6-1 to 6-3, L₆₁ may be selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group; a61 may be selected from 0, 1, 2, 3, 4, and 5; R₆₁ to R₆₃ may each independently be selected from hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group; and * is a binding site with an adjacent atom.
The first compound may be represented by one of the following Formulae 1-1, 1-2, 2-1, and 2-2:

wherein, in Formulae 1-1, 1-2, 2-1, and 2-2, Y₁₁, Y₁₂, Y₂₁, and Y₂₂ may be each independently selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group; L₁₁, L₁₂, L₂₁, and L₂₂ may be each independently selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group; a11, a12, a21, and a22 may be each independently selected from 0, 1, and 2; R₁₀ to R₁₉ and R₂₀ to R₂₉ may be each independently selected from hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, and a polymerizable group P₁, wherein at least one of R₁₀ to R₁₉ is the polymerizable group P₁ and at least one of R₂₀ to R₂₉ is the polymerizable group P₁; n11 to n15 and n21 to n25 may be each independently selected from 0, 1, 2, 3, 4, and 5; a sum of n12 and n14 may be 1 or 2; and a sum of n22 and n24 may be 1 or 2.
The first compound may be represented by one of the following Formulae 1-11 to 1-18 and 2-11 to 2-18:

wherein, in Formulae 1-11 to 1-18 and 2-11 to 2-18, Y₁₁, Y₁₂, Y₂₁, and Y₂₂ may be each independently selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group; L₁₁, L₁₂, L₂₁, and L₂₂ may be each independently selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group; a11, a12, a21, and a22 may be each independently selected from 0, 1, and 2; R₁₀ to R₁₉ and R₂₀ to R₂₉ may be each independently selected from hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₃-C₁₀ cycloalkyl group; P₁ may be a group represented by one of the following Formulae 6-1 to 6-3;
wherein, in Formulae 6-1 to 6-3, L₆₁ may be selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group; a61 may be selected from 0, 1, 2, and 3; R₆₁ to R₆₃ may be each independently selected from hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group; * is a binding site with an adjacent atom; n11 to n15 and n21 to n25 maybe each independently selected from 0, 1, 2, 3, 4, and 5; a sum of n12 and n14 may be 1 or 2; and a sum of n22 and n24 may be 1 or 2.
The first compound may be one of the following Compounds 101 to 106:
The composition may further include a second compound, wherein OP of the composition for fabricating an organic film may be equal to or greater than 2.8 and equal to or less than 4.8; OP being (n₁•OP₁ + n₂•OP₂); RP of the composition for fabricating an organic film may be equal to or greater than 0.01 and equal to or less than 0.46; RP being n₁•RP₁; n₁ is (number of moles of the first compound)/(number of moles of the first compound + number of moles of the second compound); n₂ is (number of moles of the second compound)/(number of moles of the first compound + number of moles of the second compound); OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound); and OP₂ is (total number of atoms of the second compound) / {(number of carbon atoms of the second compound) - (number of oxygen atoms of the second compound)}.
The composition may further include an initiator.
A viscosity of the composition may be about (1 cps) 0.001 Pa s to about (100 cps) 0.1 Pa s at 25 °C.
The embodiments may be realized by providing an organic light-emitting display apparatus including a substrate; an organic light-emitting device on the substrate; and an encapsulation layer on the organic light-emitting device; wherein the encapsulation layer includes 1, 2, or 3 sealing units, each sealing unit including an organic film and an inorganic film that are sequentially stacked on the organic light-emitting device; the organic film includes a polymer prepared from a composition for fabricating an organic film that includes a first compound; the first compound including n substituents Y, n being selected from 1, 2, 3, and 4, and m polymerizable groups P₁, m being selected from 1, 2, 3, and 4; wherein OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).
The composition for fabricating an organic film may further include a second compound, OP of the composition for fabricating an organic film is equal to or greater than 2.8 and equal to or less than 4.8, OP being (n₁•OP₁ + n₂•OP₂); RP of the composition for fabricating an organic film is equal to or greater than 0.01 and equal to or less than 0.46, RP being n₁•RP₁; n₁ is (number of moles of the first compound)/(number of moles of the first compound + number of moles of the second compound); n₂ is (number of moles of the second compound)/(number of moles of the first compound + number of moles of the second compound); OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound); and OP₂ is (total number of atoms of the second compound) / {(number of carbon atoms of the second compound) - (number of oxygen atoms of the second compound)}.
The inorganic film may include at least one further component selected from metal, metal nitride, metal oxide, metal oxynitride, silicon nitride, silicon oxide, and silicon oxynitride.
The encapsulation layer may further include a lower inorganic film interposed between the organic light-emitting device and the organic film.
The organic light-emitting display apparatus may further include at least one selected from a capping layer and a protective layer interposed between the organic light-emitting device and the encapsulation layer.
According to a further aspect, the invention also provides a method of manufacturing an organic light-emitting display apparatus, the method including forming an organic light-emitting device on a substrate; and forming an encapsulation layer that includes 1, 2, or 3 sealing units, each of the sealing units including an organic film and an inorganic film that are sequentially stacked on the organic light-emitting device, wherein forming the encapsulation layer includes forming the organic film by applying a composition for fabricating an organic film to a region where the organic film is to be formed and polymerizing the composition, the composition including a first compound; the first compound includes n substituents Y and m polymerizable groups P₁; n is selected from 1, 2, 3, and 4; m is selected from 1, 2, 3, and 4; OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; OP₁ being (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; RP₁ being {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).
Applying the composition may include performing flash evaporation or ink-jet printing.
Polymerizing the composition may include photocuring or thermal curing the composition.
Forming the encapsulation layer may include forming the inorganic film by chemical vapor deposition or reactive sputtering using oxygen gas or oxygen plasma.
These and/or other aspects will become apparent and more readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates a cross-sectional view of an organic light-emitting display apparatus according to an exemplary embodiment; and
FIG. 2 illustrates a cross-sectional view of an organic light-emitting display apparatus according to another exemplary embodiment.

Example embodiments will now be described more fully hereinafter with reference to the accompanying drawings; however, they may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementations to those skilled in the art.
FIG. 1 illustrates a cross-sectional view of an organic light-emitting display apparatus 100 according to an exemplary embodiment.
The organic light-emitting display apparatus 100 may include a substrate 110, an organic light-emitting device 120 on the substrate 110, and an encapsulation layer 130 on the organic light-emitting device 120.
The substrate 110, which may be a suitable substrate for organic light-emitting display apparatuses, may be, e.g., an inorganic material substrate or organic material substrate with excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and waterproofness.
For example, the substrate 110 maybe an inorganic material substrate formed of a transparent glass material including SiO₂ as a main component.
In an example, the substrate 110 may be, e.g., an insulating organic material substrate. The insulating organic material may be selected from, e.g., polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate (TAC), and cellulose acetate propionate (CAP).
The organic light-emitting device 120 may be disposed on the substrate 110. The organic light-emitting device 120 may include a first electrode, an organic layer including an emission layer, and a second electrode.
The first electrode may be formed on the substrate 110 by depositing or sputtering a material used to form the first electrode. When the first electrode constitutes an anode, the material used to form the first electrode may be a high work function material so as to facilitate hole injection. The first electrode may be a reflective electrode or a transmissive electrode. The material used to form the first electrode may include at least one selected from indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO₂), zinc oxide (ZnO), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), and magnesium-silver (Mg-Ag).
The first electrode may have a single-layered or a multi-layered structure. For example, the first electrode may have a triple-layered structure of ITO/Ag/ITO, without being limited thereto.
The organic layer including the emission layer may be formed on the first electrode.
The organic layer may include a hole transport region interposed between the first electrode and the emission layer. The organic layer may include an electron transport region interposed between the emission layer and the second electrode.
The second electrode may be formed on the organic layer. The second electrode may be a cathode, which is an electron injecting electrode. A metal used to form the second electrode may be a metal having a low work function, or an alloy, an electrically conductive compound, or any mixture thereof. For example, the second electrode may be a transmissive electrode formed of lithium (Li), magnesium (Mg), aluminum (Al), an Al-Li alloy, calcium (Ca), an Mg-In alloy, or an Mg-Ag alloy in a thin film. In order to manufacture a top emission-type organic light-emitting device, a transmissive electrode formed of ITO or IZO may be used, and various modifications may be applied thereto.
The encapsulation layer 130 may be formed on the organic light-emitting device 120. The encapsulation layer 130 may be formed by, e.g., alternately stacking an organic film 131 and inorganic film 132. The encapsulation layer 130 may help reduce and/or prevent infiltration of external moisture and/or oxygen into the organic light-emitting device 120.
The encapsulation layer 130 may include, e.g., 1, 2, or 3 sealing units each including the organic film 131 and the inorganic film 132 alternately stacked on the organic light-emitting device 120. In an implementation, one sealing unit may be included (as illustrated in FIG. 1), or 2 or 3 sealing units may be included therein. When the encapsulation layer 130 includes one sealing unit, the organic light-emitting display apparatus 100 may include the organic light-emitting device 120, the organic film 131, and the inorganic film 132 sequentially stacked on the substrate 110.
The organic film 131 may planarize a structure under the organic film 131 and may cover particles generated while forming a structure under the organic film 131, and reliability of the encapsulation layer 130 may be improved.
The inorganic film 132 may substantially prevent infiltration of external moisture and/or oxygen.
The organic film 131 may be formed of a composition for fabricating an organic film. For example, the organic film 131 may include a polymer of or prepared from the composition for fabricating an organic film.
The composition for fabricating an organic film may include a first compound including n substituents Y and m polymerizable groups P₁, in which n may be selected from 1, 2, 3, and 4; m may be selected from 1, 2, 3, and 4. For example, the first compound may include 1, 2, 3, or 4 substituents Y and 1, 2, 3, or 4 polymerizable groups P₁.
OP₁ of the first compound may be equal to or greater than 2.8 and equal to or less than 4.8. For example, OP₁ is determined as follows: (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}.
RP₁ of the first compound may be equal to or greater than 0.01 and equal to or less than 0.46. For example, RP₁ is determined as follows: {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).
The first compound may include a monomer, an oligomer, or a mixture thereof.
In the first compound, when n is 2 or greater, a plurality of Ys may be the same or different.
In the first compound, when m is 2 or greater, a plurality of P₁s may be the same or different.
For example, n may be 1 or 2.
In an implementation, Y may be selected from or include, e.g., a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group.
In an implementation, Y may be, e.g., a group represented by one of the following Formulae 5-1 to 5-9.

In Formulae 5-1 to 5-9,

R₅₁ may be selected from, e.g., hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, a nitro group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkoxy group, and a C₆-C₃₀ aryl group; a51 may be selected from, e.g., 1, 2, 3, 4, and 5;
a52 may be selected from, e.g., 1, 2, 3, 4, 5, 6, and 7; and
* is a binding site with an adjacent atom.

In an implementation, in Formulae 5-1 to 5-9, R₅₁ may be selected from, e.g., hydrogen, a methyl group, an ethyl group, a tert-butyl group, a methoxy group, an ethoxy group, a tert-butoxy group, a phenyl group, and a naphthyl group;
In an implementation, Y may be, e.g., a group represented by one of the following Formulae 5-11 to 5-28.
In Formulae 5-11 to 5-28, * is a binding site with an adjacent atom.
In an implementation, m maybe selected from, e.g., 1, 2, and 3.
In an implementation, P₁ may be selected from, e.g., an acrylate group, an epoxy group, and a vinyl group.
In an implementation, P₁ may be, e.g., a group represented by one of the following Formulae 6-1 to 6-3.
In Formulae 6-1 to 6-3,

L₆₁ may be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a61 may be selected from, e.g., 0, 1, 2, 3, 4, and 5;
R₆₁ to R₆₃ may each independently be selected from or include, e.g., hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group; and
* is a binding site with an adjacent atom.

In an implementation, in Formulae 6-1 to 6-3, L₆₁ may be selected from, e.g., a methylene group and an ethylene group; a61 maybe selected from, e.g., 0, 1, 2, and 3; and/or R₆₁ to R₆₃ may each independently be selected from, e.g., hydrogen, a methyl group, an ethyl group, an n-propyl group, and a methoxy group.
In an implementation, P₁ may be, e.g., a group represented by one of the following Formulae 6-1A, 6-1B, 6-1C, and 6-1D.
In Formulae 6-1A, 6-1B, 6-1C, and 6-1D,

R₆₁ may be selected from, e.g., hydrogen, a methyl group, an ethyl group, and an n-propyl group; and
* is a binding site with an adjacent atom.

In an implementation, P₁ may be, e.g., a group represented by one of the following Formulae 6-11 to 6-18.
In Formulae 6-11 to 6-18, * is a binding site with an adjacent atom.
In an implementation, the first compound may be, e.g., represented by one of the following Formulae 1-1, 1-2, 2-1, and 2-2.

In Formulae 1-1, 1-2, 2-1, and 2-2,

Y₁₁, Y₁₂, Y₂₁, and Y₂₂ may each independently be selected from or include, e.g., a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group;
L₁₁, L₁₂, L₂₁, and L₂₂ may each independently be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a11, a12, a21, and a22 may each independently be selected from 0, 1, and 2;
R₁₀ to R₁₉ and R₂₀ to R₂₉ may each independently be selected from or include, e.g., hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, and a polymerizable group P₁. In an implementation, at least one of R₁₀ to R₁₉ may be the polymerizable group P₁ and at least one of R₂₀ to R₂₉ is the polymerizable group P₁.
n11 to n15 and n21 to n25 may each independently be selected from 0, 1, 2, 3, 4, and 5; a sum of n12 and n14 may be 1 or 2; and
a sum of n22 and n24 may be 1 or 2.

In an embodiment of the invention, in Formulae 1-1, 1-2, 2-1, and 2-2, Y₁₁, Y₁₂, Y₂₁, and Y₂₂ may each independently be, e.g., a group represented by one of the following Formulae 5-1 to 5-9.

In Formulae 5-1 to 5-9,

R₅₁ may be selected from, e.g., hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, a nitro group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkoxy group, and a C₆-C₃₀ aryl group; a51 may be selected from 1, 2, 3, 4, and 5;
a52 may be selected from 1, 2, 3, 4, 5, 6, and 7; and
* is a binding site with an adjacent atom.

In an embodiment of the invention, in Formulae 1-1, 1-2, 2-1, and 2-2, L₁₁, L₁₂, L₂₁, and L₂₂ may each independently be selected from, e.g., a methylene group, an ethylene group, and a propylene group.
In an embodiment of the invention, in Formulae 1-1, 1-2, 2-1, and 2-2, R₁₀ to R₁₉ and R₂₀ to R₂₉ may each independently be selected from, e.g., hydrogen, deuterium, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, and a polymerizable group P₁. In an implementation, at least one of R₁₀ to R₁₉ may be the polymerizable group P₁ and at least one of R₂₀ to R₂₉ may be the polymerizable group P₁.
In an embodiment of the invention, the first compound may be, e.g., represented by one of the following Formulae 1-11 to 1-18 and 2-11 to 2-18.

In Formulae 1-11 to 1-18 and 2-11 to 2-18,

Y₁₁, Y₁₂, Y₂₁, and Y₂₂ may each independently be selected from or include, e.g., a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group;
L₁₁, L₁₂, L₂₁, and L₂₂ may each independently be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a11, a12, a21, and a22 may each independently be selected from 0, 1, and 2; R₁₀ to R₁₉ and R₂₀ to R₂₉ may each independently be selected from or include, e.g., hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₃-C₁₀ cycloalkyl group; and
P₁ may be, e.g., a group represented by one of the following Formulae 6-1 to 6-3.

L₆₁ may be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a61 may be selected from 0, 1, 2, and 3;
R₆₁ to R₆₃ may each independently be selected from or include, e.g., hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group;
* is a binding site with an adjacent atom;
n11 to n15 and n21 to n25 may each independently be selected from 0, 1, 2, 3, 4, and 5; a sum of n12 and n14 may be 1 or 2; and
a sum of n22 and n24 may be 1 or 2.

In an embodiment of the invention, the first compound may be, e.g., one of the following Compounds 101 to 106.
The first compound may have high durability against plasma. Thus, when the inorganic film 132 is formed by PECVD or sputtering, which may degrade the organic film 131, after forming the organic film 131 by using the composition for fabricating an organic film including the first compound, degradation of the organic film 131 may be inhibited. In addition, the first compound may provide physical properties such as viscosity that is suitable for a process of forming the organic film 131, and speed and economic efficiency of the process of forming the organic film 131 may be improved.
The first compound may be included in the composition in an amount of about 5% by weight to about 80% by weight, e.g., about 30% by weight to about 40% by weight, based on the weight of the composition for fabricating an organic film. When the amount of the first compound is within the ranges described above, not only reliability but also manufacturing efficiency of the organic light-emitting display apparatus may be improved.
In an embodiment of the invention, the composition for fabricating an organic film may further include a second compound.
OP of the composition for fabricating an organic film may be, e.g., equal to or greater than 2.8 and equal to or less than 4.8 or about 2.8 to about 4.8. OP is determined as follows (n₁•OP₁ + n₂•OP₂).
RP of the composition for fabricating an organic film may be, e.g., equal to or greater than 0.01 and equal to or less than 0.46 or about 0.01 to about 0.46. RP is determined as follows n₁•RP₁;
n₁ is (number of moles of the first compound)/(number of moles of the first compound + number of moles of the second compound);
n₂ is (number of moles of the second compound)/(number of moles of the first compound + number of moles of the second compound);
OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)};
RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound); and
OP₂ is (total number of atoms of the second compound) / {(number of carbon atoms of the second compound) - (number of oxygen atoms of the second compound)}, without being limited thereto.
In an embodiment of the invention, the second compound may be represented by one of the following Formula 3 or Formula 4.

In Formulae 3 and 4,

R₃₀ to R₃₄ and R₄₀ to R₄₅ may each independently be selected from or include, e.g., hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, and a polymerizable group P₂. In an implementation, at least one of R₃₀ to R₃₄ may be the polymerizable group P₂ and at least one of R₄₀ to R₄₅ may be the polymerizable group P₂.
P₂ may be selected from, e.g., an acrylate group, an epoxy group, and a vinyl group; and
n31, n41, and n42 may each independently be selected from integers from 0 to 20. In an embodiment of the invention, in Formulae 3 and 4,
R₃₀ to R₃₄ and R₄₀ to R₄₅ may each independently be selected from, e.g., hydrogen, deuterium, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, and a polymerizable group P₂. In an implementation, at least one of R₃₀ to R₃₄ may be the polymerizable group P₂ and at least one of R₄₀ to R₄₅ may be the polymerizable group P₂.
P₂ may be, e.g., a group represented by one of the following Formulae 6-1 to 6-3.

L₆₁ may be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a61 may be selected from 0, 1, 2, 3, 4, and 5;
R₆₁ to R₆₃ may each independently be selected from or include, e.g., hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group;
* is a binding site with an adjacent atom; and
n₃₁, n₄₁, and n₄₂ may each independently be selected from integers from 0 to 15.

In an embodiment of the invention, the second compound may be, e.g., represented by one of the following Formulae 3-1 to 3-3, 4-1, and 4-2.

In Formulae 3-1 to 3-3, 4-1, and 4-2,

R₃₀ to R₃₄ and R₄₀ to R₄₅ may each independently be selected from, e.g., hydrogen, deuterium, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, and a polymerizable group P₂. In an implementation, at least one of R₃₀ to R₃₄ may be the polymerizable group P₂ and at least one of R₄₀ to R₄₅ may be the polymerizable group P₂.
P₂ may be, e.g., a group represented by one of the following Formulae 6-1 to 6-3.

L₆₁ may be selected from or include, e.g., a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;
a61 may be selected from 0, 1, 2, and 3;
R₆₁ to R₆₃ may each independently be selected from or include, e.g., hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group;
* is a binding site with an adjacent atom; and
n31, n41, and n42 may each independently be selected from integers from 0 to 15.

In an embodiment of the invention, the second compound may be, e.g., one of the following Compounds 201 to 203.:
The second compound may serve as a starting material of polymerization together with the first compound contributing to formation of a polymer of the composition for fabricating an organic film.
When the composition for fabricating an organic film includes the second compound as described above, the second compound may be included in an amount of about 20% by weight to about 95% by weight, e.g., about 60% by weight to about 70% by weight, based on the weight of the composition for fabricating an organic film. When the amount of the second compound is within the ranges described above, a rate of polymerization of the composition for fabricating an organic film may be improved and the transparency of the organic film 131 may be increased.
In an embodiment of the invention, the composition for fabricating an organic film may further include an initiator. The initiator may be a suitable material to initiate polymerization of the composition for fabricating an organic film.
In an embodiment of the invention, the initiator may be a thermal initiator, such as an organic peroxide-based compound and an azo-based compound, or a photo initiator such as a benzophenone-based compound, an oxime-based compound, and a phosphine oxide-based compound.
Examples of the organic peroxide-based compound may include benzoyl peroxide, t-butyl peroxybenzoate, o-methyl benzoyl peroxide, p-methyl benzoyl peroxide, di-t-butyl peroxide, dicumyl peroxide, 1,1-bis(t-butylperoxy)-3,3,5-trimethyl cyclohexane, 1,1-di(t-butylperoxy) cyclohexane, 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 2,5-di(t-butylperoxy)-2,5-dimethyl-hexyne, 1,6-bis(p-toluoyl peroxy carbonyloxy)hexane, and di(4-methylbenzoylperoxy) hexamethylene biscarbonate.
Examples of the azo-based compound may include 2'-azobis (4-methoxy-2,4-dimethyl valeronitrile), 2,2'-azobis (2,4-dimethyl) valeronitrile, azobis isobutyronitrile, and 2,2'-azobis(2-methyl butyronitrile).
Examples of the benzophenone-based compound may include 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methyl-1-propanone, alpha-dimethoxy-alpha-phenylacetophenone, 2-benzyl-2-(dimethylamino)-1-[4-(4-morpholinyl) phenyl]-1-butanone, and 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone.
Examples of the oxime-based compound may include (hydroxyimino)cyclohexane, 1-[4-(phenylthio)phenyl]-octane-1,2-dione-2-(O-benzoyloxime), 1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]-ethanone-1-(O-acetyloxime), trichloromethyl-triazine derivatives, 4-(4-methoxystyryl)-2,6-trichloromethyl-1,3,5-triazine, 4-(4-methoxyphenyl)-2,6-trichloromethyl-1,3,5-triazine, and α- aminoketone (1-(4-morpholinophenyl)-2-dimethylamino-2-benzyl-butan-1-one).
Examples of the phosphine oxide-based compound may include diphenyl(2,4,6-trimethylbenzoyl)-phosphine oxide (TPO) and phenyl bis (2,4,6-trimethyl benzoyl) phosphine oxide (BAPO).
An amount of the initiator may be selected within a suitable range. In an implementation, the initiator may be included in an amount of, e.g., about 0.01% by weight to about 10% by weight, based on the weight of the composition for fabricating an organic film.
In an embodiment of the invention, the viscosity of the composition for fabricating an organic film may be in a range of about (1 cps) 0.001 Pa s to about (100 cps) 0.1 Pa s at 25 °C, e.g., about (10 cps) 0.01 Pa s to about (50 cps) 0.05 Pa s at 25 °C. When the viscosity of the composition for fabricating an organic film is within the ranges described above, ease of manufacturing the composition for fabricating an organic film may be improved and the polymer of the composition for fabricating an organic film may have excellent planarization properties.
The thickness of the organic film 131 may be in a range of about 0.1 µm to about 50 µm, e.g., about 1 µm to about 10 µm. When the thickness of the organic film 131 is within the ranges described above, planarization of the structure under the organic film 131 may be efficiently performed.
The composition for fabricating an organic film may be applied to a region where the organic film will be formed using suitable methods such as flash evaporation, spin coating, dip coating, or ink-jet printing, without being limited thereto. For example, the composition for fabricating an organic film may be applied to the region where the organic film will be formed by flash evaporation or ink-jet printing.
Then, the composition for fabricating an organic film applied to the region may be polymerized by, e.g., photocuring or thermal curing. For example, the composition for fabricating an organic film may be polymerized by known methods such as UV curing, infrared curing, and laser curing.
The inorganic film 132 may include an inorganic material suitable for forming encapsulation layers. For example, the inorganic film 132 may include at least one selected from metal, metal nitride, metal oxide, metal oxynitride, silicon nitride, silicon oxide, and silicon oxynitride. For example, the inorganic film 132 may include at least one selected from aluminum oxide, silicon oxide, silicon nitride, and silicon oxynitride.
A thickness of the inorganic film 132 may be in a range of about (100 Å) 10nm to about (15,000 Å) 1,500nm, e.g., about (500 Å) 50nm to about (3,000 Å) 300nm. When the thickness of the inorganic film 132 is within the ranges described above, the encapsulation layer 130 may efficiently block moisture and/or oxygen.
The inorganic film 132 may be formed by, e.g., sputtering, reactive sputtering, chemical vapor deposition (CVD), plasma-enhanced chemical vapor deposition (PECVD), evaporation, electron cyclotron resonance PECVD, physical vapor deposition, atomic layer deposition (ALD), or the like. For example, the inorganic film 132 may be formed by reactive sputtering by using oxygen gas or oxygen plasma or CVD.
In an embodiment of the invention, the encapsulation layer 130 may further include a lower inorganic film interposed between the organic light-emitting device 120 and the organic film 131. The lower inorganic film may enhance the ability of the encapsulation layer 130 to block moisture and/or oxygen. The lower inorganic film is as described above with reference to the inorganic film 132.
In an embodiment of the invention, a thickness of the encapsulation layer 130 may be in a range of about 0.1 µm to about 1,000 µm, e.g., about 1 µm to about 10 µm. When the thickness of the encapsulation layer 130 is within the ranges described above, the encapsulation layer 130 may efficiently block infiltration of moisture and/or oxygen into the organic light-emitting device 120 and may have flexibility.
In an embodiment of the invention, at least one of a capping layer and a protective layer may further be interposed between the organic light-emitting device 120 and the encapsulation layer 130.
The capping layer may be formed on the organic light-emitting device 120. The capping layer may induce constructive interference of light emitted from the organic light-emitting device 120, thereby increasing light coupling efficiency. The capping layer may be formed of a material having a relatively high refractive index, e.g., an organic metal complex such as Alq₃, silicon oxide, and silicon nitride.
The protective layer may be formed on the capping layer or the organic light-emitting device 120. The protective layer may help prevent damage of the capping layer or damage of the organic light-emitting device 120 caused during the formation of the encapsulation layer 130. For example, the protective layer may include lithium fluoride, silicon oxide, silicon nitride, and the like.
In an embodiment of the invention, an upper inorganic film may further be formed on the encapsulation layer 130. The upper inorganic film may enhance adhesive force between a film to be attached to the organic light-emitting display apparatus 100 and the organic light-emitting display apparatus 100. The upper inorganic film is as described above with reference to the inorganic film 132.
FIG. 2 illustrates a cross-sectional view of an organic light-emitting display apparatus 200 according to another exemplary embodiment.
The organic light-emitting display apparatus 200 may include a substrate 210, an organic light-emitting device 200 on the substrate 210, and an encapsulation layer on the organic light-emitting device 220.
The encapsulation layer may include a first sealing unit 230 and a second sealing unit 240.
The first sealing unit 230 may include a first organic film 231 and a first inorganic film 232 that are sequentially stacked on the organic light-emitting device 220.
The second sealing unit 240 may include a second organic film 241 and a second inorganic film 242 that are sequentially stacked on the first sealing unit 230.
The first organic film 231 and the second organic film 241 may be as described above with reference to the organic film 131. A thickness of the first organic film 231 may be the same as or different from that of the second organic film 241. Materials used to form the first organic film 231 and the second organic film 241 may be the same or different.
The first inorganic film 232 and the second inorganic film 242 are as described above with reference to the inorganic film 132. A thickness of the first inorganic film 232 may be the same as or different from that of the second inorganic film 242. Materials used to form the first inorganic film 232 and the second inorganic film 242 may be the same or different.
According to a further aspect, the invention comprisesa method of manufacturing the organic light-emitting display apparatus 100..
An organic light-emitting device 120 may be formed on a substrate 110. The organic light-emitting device 120 may be formed using a suitable method.
In an example, a lower inorganic film may be formed on the organic light-emitting device 120 to cover the organic light-emitting device 120. The lower inorganic film is as described above.
A composition for fabricating an organic film may be applied to the lower inorganic film at a region where an organic film will be formed and polymerized to form an organic film 131. The composition for fabricating an organic film is as described above and the organic film 131 is as described above.
An inorganic film 132 may be formed on the organic film 131. The inorganic film 132 is as described above.
An organic light-emitting display apparatus including one or two sealing units is described above. When the encapsulation layer includes two or more encapsulation layers, another layer, e.g., an organic film and an inorganic film contained in an encapsulation layer of a conventional organic light-emitting display apparatus, may further be interposed between the encapsulation layers, and various other modifications may also be applied thereto.
A device according to a further aspect of the invention will be described in detail with reference to the following synthesis examples and examples. These synthesis examples and examples are not intended to limit the purpose and scope of the one or more embodiments.
The following Examples and Comparative Examples are provided in order to highlight characteristics of one or more embodiments, but it will be understood that the Examples and Comparative Examples are not to be construed as limiting the scope of the embodiments, nor are the Comparative Examples to be construed as being outside the scope of the embodiments. Further, it will be understood that the embodiments are not limited to the particular details described in the Examples and Comparative Examples.

Example 1

A composition for fabricating an organic film was prepared by mixing compounds listed in Table 1 below in a weight ratio described in Table 1. Table 1

First compound Second compound Initiator

Example 1 Compound 102 (33.98% by weight) Compound 203 (63.11% by weight) TPO (2.91% by weight)
Viscosity of the composition for fabricating an organic film was measured using a Brookfield DE-II +Pro viscometer at 25 °C, and the results are shown in Table 2 below. Table 2

Viscosity (cps) Pa s

Example 1 (20) 0.020

Comparative Examples 1 and 2

A composition for fabricating an organic film was prepared by mixing compounds listed in Table 3 below in a weight ratio described in Table 3.

Table 3

	First compound	Second compound	Initiator
Comparative Example 1	-	Compound 203 (90.90% by weight), trimethylol propane triacrylate (4.79% by weight)	TPO (4.31% by weight)
Comparative Example 2	Compound 102 (1.94% by weight)	Compound 203 (95.15% by weight)	TPO (2.91% by weight)

Viscosity of the composition for fabricating an organic film was measured using a Brookfield DE-II +Pro viscometer at 25 °C, and the results are shown in Table 4 below. Table 4

Viscosity (cps) Pa s

Comparative Example 1 (14) 0.014

Comparative Example 2 (15) 0.015

Example 2

A glass substrate on which 500 organic light-emitting devices were formed was prepared. A glass capping layer having a thickness of (800 Å) 80nm was formed to cover the organic light-emitting devices, and LiF was deposited on the capping layer to form a protective layer.
Then, an organic light-emitting display apparatus was manufactured by preparing an encapsulation layer by forming:

i) a lower inorganic film having a thickness of (10,000 Å) 1,000nm by depositing silicon oxynitride (SiO_xN_y) on the protective layer;
ii) an organic film having a thickness of 4 µm on the lower inorganic film using the composition of Example 1; and
iii) an inorganic film having a thickness of (7,000 Å) 700nm on the organic film by depositing silicon nitride (SiN_x).

Comparative Example 3

An organic light-emitting display apparatus was manufactured in the same manner as in Example 2, except that the composition of Comparative Example 1 was used in the formation of the organic film, instead of the composition of Example 1.

Evaluation Example 1: Evaluation of Lifespan of Organic Light-emitting Display Apparatus

Initial states of screens of the organic light-emitting display apparatuses manufactured according to Example 2 and Comparative Example 3 were observed using a microscope, and states of the screens after being stored at 85 °C and in a relative humidity 85% for 240 hours and 500 hours were observed using the microscope. Then, the number of cells having black spots were counted, and the results are shown in Table 5 below. Table 5

240 hours 500 hours

Example 2 500 cells 500 cells

0% 0%

Comparative Example 3 500 cells 500 cells

5% 30%
Referring to Table 5, the organic light-emitting display apparatus according to Example 2 exhibited excellent lifespan characteristics due to high durability against oxygen plasma, as compared with the organic light-emitting display apparatus according to Comparative Example 3.
The organic light-emitting display apparatus according to an aspect of the invention and including the organic light-emitting device may further include a driving transistor or a switching transistor. An organic light-emitting device may be deteriorated by oxygen and/or moisture, and a sealing member may further be applied to the organic light-emitting device.
As described above, according to the one or more of the above exemplary embodiments, the organic light-emitting display apparatus has high stability during the plasma process.
The embodiments may provide compositions for fabricating an organic film having high stability in a plasma process.
Example embodiments have been disclosed herein, and although specific terms are employed, they are used and are to be interpreted in a generic and descriptive sense only and not for purpose of limitation. In some instances, as would be apparent to one of ordinary skill in the art as of the filing of the present application, features, characteristics, and/or elements described in connection with a particular embodiment may be used singly or in combination with features, characteristics, and/or elements described in connection with other embodiments unless otherwise specifically indicated. Accordingly, it will be understood by those of skill in the art that various changes in form and details may be made without departing from the scope of the present invention as set forth in the following claims.

Claims

A composition for fabricating an organic film, the composition comprising a first compound that includes:
n substituents Y, and

m polymerizable groups P₁,

wherein:
n is selected from 1, 2, 3, and 4;

m is selected from 1, 2, 3, and 4;

OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; OP₁ being (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and

RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; RP₁ being {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).
The composition for fabricating an organic film as claimed in claim 1, wherein Y is selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group.
The composition for fabricating an organic film as claimed in claim 1 or claim 2, wherein m is selected from 1, 2, and 3.
The composition for fabricating an organic film as claimed in any preceding claim , wherein P₁ is selected from an acrylate group, an epoxy group, and a vinyl group.
The composition for fabricating an organic film as claimed in any preceding claim, wherein P₁ is a group represented by one of the following Formulae 6-1 to 6-3:
wherein, in Formulae 6-1 to 6-3,
L₆₁ is selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;

a61 is selected from 0, 1, 2, 3, 4, and 5;

R₆₁ to R₆₃ are each independently selected from hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group; and

* is a binding site with an adjacent atom.
The composition for fabricating an organic film as claimed in any preceding claim , wherein the first compound is represented by one of the following Formulae 1-1, 1-2, 2-1, and 2-2:

wherein, in Formulae 1-1, 1-2, 2-1, and 2-2,
Y₁₁, Y₁₂, Y₂₁, and Y₂₂ are each independently selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group;

L₁₁, L₁₂, L₂₁, and L₂₂ are each independently selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;

a11, a12, a21, and a22 are each independently selected from 0, 1, and 2;

R₁₀ to R₁₉ and R₂₀ to R₂₉ are each independently selected from hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, and a polymerizable group P₁, wherein at least one of R₁₀ to R₁₉ is the polymerizable group P₁ and at least one of R₂₀ to R₂₉ is the polymerizable group P₁;

n11 to n15 and n21 to n25 are each independently selected from 0, 1, 2, 3, 4, and 5;

a sum of n12 and n14 is 1 or 2; and

a sum of n22 and n24 is 1 or 2.
The composition for fabricating an organic film as claimed in any preceding claim , wherein the first compound is represented by one of the following Formulae 1-11 to 1-18 and 2-11 to 2-18:

wherein, in Formulae 1-11 to 1-18 and 2-11 to 2-18,
Y₁₁, Y₁₂, Y₂₁, and Y₂₂ are each independently selected from a substituted or unsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀ aryloxy group, and a substituted or unsubstituted C₆-C₆₀ arylthio group;

L₁₁, L₁₂, L₂₁, and L₂₂ are each independently selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;

a11, a12, a21, and a22 are each independently selected from 0, 1, and 2;

R₁₀ to R₁₉ and R₂₀ to R₂₉ are each independently selected from hydrogen, deuterium, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₃-C₁₀ cycloalkyl group;

P₁ is a group represented by one of the following Formulae 6-1 to 6-3;

wherein, in Formulae 6-1 to 6-3,
L₆₁ is selected from a substituted or unsubstituted C₁-C₁₀ alkylene group and a substituted or unsubstituted C₂-C₁₀ alkenylene group;

a61 is selected from 0, 1, 2, and 3;

R₆₁ to R₆₃ are each independently selected from hydrogen, a substituted or unsubstituted C₁-C₁₀ alkyl group, and a substituted or unsubstituted C₁-C₁₀ alkoxy group;

* is a binding site with an adjacent atom;

n11 to n15 and n21 to n25 are each independently selected from 0, 1, 2, 3, 4, and 5;

a sum of n12 and n14 is 1 or 2; and

a sum of n22 and n24 is 1 or 2.
The composition for fabricating an organic film as claimed in claim 1, wherein the first compound is one of the following Compounds 101 to 106:
The composition for fabricating an organic film as claimed in any preceding claim 1, further comprising a second compound, wherein:
OP of the composition for fabricating an organic film is equal to or greater than 2.8 and equal to or less than 4.8; OP being (n₁•OP₁ + n₂•OP₂);

RP of the composition for fabricating an organic film is equal to or greater than 0.01 and equal to or less than 0.46; RP being n₁•RP₁;

n₁ is (number of moles of the first compound)/(number of moles of the first compound + number of moles of the second compound);

n₂ is (number of moles of the second compound)/(number of moles of the first compound + number of moles of the second compound);

OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)};

RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound); and

OP₂ is (total number of atoms of the second compound) / {(number of carbon atoms of the second compound) - (number of oxygen atoms of the second compound)}.
The composition for fabricating an organic film as claimed in any preceding claim , further comprising an initiator.
The composition for fabricating an organic film as claimed in any preceding claim , wherein the viscosity of the composition is (1 cps) 0.001 Pa s to (100 cps) 0.1 Pa s at 25 °C.
Use of a composition for fabricating an organic film as claimed in any preceding claim in an organic light-emitting display apparatus, comprising:
a substrate;

an organic light-emitting device on the substrate; and

an encapsulation layer on the organic light-emitting device;

wherein the encapsulation layer includes 1, 2, or 3 sealing units, each sealing unit including the organic film and an inorganic film that are sequentially stacked on the organic light-emitting device; and

the organic film including a polymer prepared from the composition.as claimed in claim 1.
Use of the composition as claimed in claim 12, wherein:
the composition for fabricating an organic film further includes a second compound,

OP of the composition for fabricating an organic film is equal to or greater than 2.8 and equal to or less than 4.8, OP being (n₁•OP₁ + n₂•OP₂);

RP of the composition for fabricating an organic film is equal to or greater than 0.01 and equal to or less than 0.46, RP being n₁•RP₁;

n₁ is (number of moles of the first compound)/(number of moles of the first compound + number of moles of the second compound);

n₂ is (number of moles of the second compound)/(number of moles of the first compound + number of moles of the second compound);

OP₁ is (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)};

RP₁ is {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound); and

OP₂ is (total number of atoms of the second compound) / {(number of carbon atoms of the second compound) - (number of oxygen atoms of the second compound)}.
Use of the composition as claimed in claim 12 or claim 13, wherein the inorganic film includes at least one selected from metal, metal nitride, metal oxide, metal oxynitride, silicon nitride, silicon oxide, and silicon oxynitride.
Use of the composition as claimed in any of claims 12 to 14, wherein the encapsulation layer further includes a lower inorganic film interposed between the organic light-emitting device and the organic film and/or the apparatus
further comprises at least one selected from a capping layer and a protective layer interposed between the organic light-emitting device and the encapsulation layer.
A method of manufacturing an organic light-emitting display apparatus, the method comprising:
forming an organic light-emitting device on a substrate; and

forming an encapsulation layer that includes 1, 2, or 3 sealing units, each of the sealing units including an organic film and an inorganic film that are sequentially stacked on the organic light-emitting device,

wherein:
forming the encapsulation layer includes forming the organic film by applying a composition for fabricating an organic film to a region where the organic film is to be formed and polymerizing the composition, the composition including a first compound;

the first compound includes n substituents Y and m polymerizable groups P₁;

n is selected from 1, 2, 3, and 4;

m is selected from 1, 2, 3, and 4;

OP₁ of the first compound is equal to or greater than 2.8 and equal to or less than 4.8; OP₁ being (total number of atoms of the first compound) / {(number of carbon atoms of the first compound) - (number of oxygen atoms of the first compound)}; and

RP₁ of the first compound is equal to or greater than 0.01 and equal to or less than 0.46; RP₁ being {(number of carbon atoms of the substituent Y) X n} / (number of carbon atoms of the first compound).